Fry eggs cracked in vacuum sometimes get temperature-locked to 19.9°C

$SUBJECT. I haven't tested this without mods (yet). Here's the build:

• Viable eggs are swept in the left conveyor loader, where they stay until cracking. Ambient temps are ~22°C, they're warmed up to ~24°C by the time sweeper gets them out of the water. The loader has a single rail segment on the output cell, that doesn't connect anywhere, and is unpowered.
• Cracking drops raw eggs (and eggshell) into 85°C water (non-automated tepidiser).
• High temp should turn cracked egg into omelette, which is swept into the right conveyor loader.

This issue is intermittent, and unpredictable - I've loaded the attached save several times, and on separate loads I've observed:

• first egg temp-locked, subsequent eggs cooking
• none of ~6 eggs temp-locked, cooking within seconds
• first egg temp-locked, all subsequent eggs immediately merging with this egg
  

hydra power v2.sav